⚡ Power
watts to milliwatts Converter
Convert watts to milliwatts instantly with a reference conversion table.
Quick answer: To convert watts to milliwatts, multiply by 1000. For example, 1 watts = 1000 milliwatts. Use the calculator below for any value.
watts to milliwatts
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Common conversions
| watts | milliwatts |
|---|
Formula:
How to convert watts to milliwatts
1
Enter your value
Type the number of watts you want to convert into the left box. The result in milliwatts appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — milliwatts to watts. Your current value carries across so you don't have to re-enter anything.
3
About watts and milliwatts
watts and milliwatts are common power measurements.
📊 Common conversions at a glance
| watts | milliwatts |
|---|---|
| 0.001 | 1 |
| 0.01 | 10 |
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
Reviewed for 2026. watts ↔ milliwatts conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.